# 嗯背单词JP vs IdeaSpark

The clearest difference is ads: 嗯背单词JP at none against IdeaSpark's shown. 嗯背单词JP also leads on update cadence (weekly vs every 4 months). IdeaSpark's advantage is iOS requirement (13.0 vs 16). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 嗯背单词JP sells 3 in-app purchases, starting at $2.99 per year and IdeaSpark sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

嗯背单词JP ships an update weekly, IdeaSpark every 4 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 嗯背单词JP | IdeaSpark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (18 ratings)](https://appshunter.io/ios/app/jp/id6502523869/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 73.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 4 months |
| Monetization | Freemium | — |
| Size | 772 MB | 31 MB |
| Requires iOS | 16 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [斌斌 沈](https://appshunter.io/developer/1509733863) | [TOBIAS ROSSMANN](https://appshunter.io/developer/1765097850) |

## What reviewers say

### 嗯背单词JP

[App page](https://appshunter.io/ios/app/jp/id6502523869)

This app uses the Leitner Box algorithm for spaced repetition to help you memorize Japanese vocabulary. It offers various learning modes, customizable definitions, and high-quality pronunciation.

**Highlights:** Leitner Box spaced repetition algorithm, iCloud backup and sync, High-quality TTS pronunciation, Three learning modes (quick, spelling, dictation), Editable definitions and examples, Word notes and built-in dictionary

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 赞助会员 | $2.99 | per year |
| 终身会员 | $4.99 | one-time |
| 终身会员 | $6.99 | one-time |


### IdeaSpark

[App page](https://appshunter.io/ios/app/ideaspark-one-idea-a-day/id6743702294)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IdeaSpark Premium (Monatlich) | $3.99 | per month |
| IdeaSpark Premium (Jährlich) | $22.99 | per year |
| IdeaSpark Premium (Lifetime) | $44.99 | one-time |


## Frequently asked questions

### Is 嗯背单词JP free?

嗯背单词JP is free to download, with in-app purchases available.

### Is IdeaSpark free?

IdeaSpark is free to download, with in-app purchases available.

### Do 嗯背单词JP or IdeaSpark have ads?

IdeaSpark shows ads; 嗯背单词JP does not.

### Which is updated more often, 嗯背单词JP or IdeaSpark?

嗯背单词JP ships an update weekly, and IdeaSpark every 4 months. Most recently, 嗯背单词JP was updated on October 30, 2026 and IdeaSpark on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*